Zhu Ping, Zigler Arie, Xie Xinglong, Zhang Dongjun, Yang Qingwei, Sun Meizhi, Papeer Jenya, Kang Jun, Gao Qi, Liang Xiao, Zhu Haidong, Guo Ainlin, Liang Yan, Ji Shengzhe, Ren Lei, Liu Huiya, Kang Ning, Zhao Yao, Zhu Jianqiang
Opt Lett. 2020 Apr 15;45(8):2279-2282. doi: 10.1364/OL.388391.
The spatiotemporal plasma-lens filter proposed here enhances the temporal contrast of the ultrashort pulse laser by combining plasma optics and spatial filtering. Experimentally, the spatiotemporal plasma-lens filter has improved the temporal contrast by 2 orders of magnitude with 80% laser transmission efficiency under a 1 Hz repetitive laser operation. Not only were the pre-pulse and the pedestal cleaned out, but also the rising edge of the main pulse was sharpened.
本文提出的时空等离子体透镜滤波器通过结合等离子体光学和空间滤波来增强超短脉冲激光的时间对比度。实验表明，在1 Hz重复频率激光运行下，时空等离子体透镜滤波器在激光传输效率为80%的情况下，将时间对比度提高了2个数量级。不仅消除了预脉冲和基座，还锐化了主脉冲的上升沿。
